# Relationship history for MSHA mine 3800130

Current hierarchy: **Heidelberg Materials AG → Heidelberg Materials SE Agg., LLC → Columbia Sand**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Foster Dixiana Corporation → Columbia Sand; 1950-01-01 to 2007-10-19; source msha-controller-operator-history
- **controller_controls_mine:** Larry  Forsell  et al → Columbia Sand; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Forsell  et al → Foster Dixiana Corporation; 1950-01-01 to 2007-10-19; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → Columbia Sand; 1988-11-14 to 2007-08-22; source msha-controller-operator-history
- **controller_controls_mine:** Heidelberg Materials AG → Columbia Sand; 2007-08-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** South Carolina Minerals Inc. → Columbia Sand; 2007-10-20 to 2013-07-28; source msha-controller-operator-history
- **controller_controls_mine:** F Browne Gregg Trust → Columbia Sand; 2007-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** F Browne Gregg Trust → South Carolina Minerals Inc.; 2007-10-20 to 2013-07-28; source msha-controller-operator-history
- **operator_operates_mine:** Carolina Aggregates, LLC → Columbia Sand; 2013-07-29 to 2016-08-15; source msha-controller-operator-history
- **controller_controls_mine:** Sand Flea LLC et al → Columbia Sand; 2013-07-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sand Flea LLC et al → Carolina Aggregates, LLC; 2013-07-29 to 2016-08-15; source msha-controller-operator-history
- **controller_controls_operator:** Good Dirt LLC et al → Carolina Aggregates, LLC; 2013-07-29 to 2016-08-15; source msha-controller-operator-history
- **operator_operates_mine:** Heidelberg Materials SE Agg., LLC → Columbia Sand; 2016-08-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Heidelberg Materials SE Agg., LLC; 2016-08-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Heidelberg Materials SE Agg., LLC; 2016-08-16 to 2007-08-22; source msha-controller-operator-history